ARCHIVED REPORTS XR0012718 - Laserfiche WebLink

Home Browse Search

F..s Blockbuster Video/Yelloiv Submarine Site AssessmentlRetnedial RecommendationS Page 2 taker, and the waste oil tank area had a high value for oil in that sample. A copy of the pertinent information from the Youngdahl report is included in the Appendices. The full report is on file with the San Joaquin County Environmental Health Department. 3.2 Narrative of WH!"s P"OPOsal In January 1991, WHF submitted a plan for re-excavation of the site to the San Joaquin County Environmental. Health Department. At that time, the presence of the waste oil tank on site was unknown. The County rejected the proposed oversight of the re-excavation at this site. WHF had proposed to re-excavate the former fuel tank and waste oil lank areas, as well as the former fuel island areas. � Due the lack of County oversight, WHF proposed to take nw:terous sail samples showing acro lines for any contamination found including product line routes, if they could be found. We anticipated finding small amounts of con- tamination, and hoped to remediate on site, any contaminated soils. 3.3 Actual Site Conditions On February b, 1991, WHF began re-excavating the site with a backhoe. We found that the former fuel tank area was free of soils contamination. The product lines to the fuel islands had not been removed, and one of those lines still had approximately 10 gallons of fuel in it. The fuel was drummed on site and the product lines were disposed of by Oscar Hricson as a hazardous material. The area of soils contamination is shown graphically in the Plates section. The fuel island areas were either none detected", or had small packets of contamination, which were excavated and stockpiled on site. A previously unknown fuel island was discovered in the northwest corner of the property. This area had contamination in a band about four feet wide and three = feet thick near the surface; the band narrowed and went to the north as it went # down. All of the contaminated soils to a depth of 22 feet has been removed and stockpiled on site. Again, this band is shown graphically in the }']ales section. ' /7, Excavation was stopped at 22 feet as the backhoe could not go deepar without terracing the excavation and adding significant costs to ttie re-excavation. As stated previously, it was discovered that the waste oil tank was still in phe, — -- - The- County--Health_Department._was:--_notified and peri-nits were obtained to remove the tank with oversight from the County. Back taxes on the tan; were paid, at that time. Alla1vtical,results, at the time of removal, show 1.0,000 PPM of motor oil at 12 feel below the surface(two (2) feet below the:tank).